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• Video Slot Machine Cheats

“How to win on slot machines” is a popular search term, but we all know that the real question most of the gamblers want to know if there are “ways to cheat a slot machine”. That’s ok. Everybody wonders that. Since it is just the reels turning and symbols placing, there must be a “trick”, right? Well, we will answer this question right below but we are warning you: Don’t get your hopes up.

Yeah, most of the slot cheats were designed to manipulate that system and the light wand is no exception. This device is inserted at the coin slot of the cabinets, where the light sensor is placed. Then, the device starts to flash a series of lights to confuse the sensor. Go to for more information.We've been in business for 16 years specializing in Gambling Devices.Products in this vide. Video slots are the latest development in the modern day slot machine. Find out how they work, how to play and how to win. We also review some of the most popular video slot machines from the worlds biggest slot makers. 10 Secrets Casinos Don't Want You to Know. Subscribe for more amazing videos! Casinos are multi-million dollar business. Carmichael is one of the most successful slot machine cheats, although he has spent time in prison for his crimes. He began cheating slot machines in 1980 when he used a metal device that was inserted into the coin slot and then triggered a payout.

IS CHEATING ON SLOTS POSSIBLE?

No. It is certainly not possible. This is not a click-bait article, we are giving you the answer right away. No, you cannot manipulate slot machines. There are no cheats, no hacks. Sorry. There was a time when this was possible, but not anymore. (We are giving a couple examples below.) To understand why, you must learn how slot machines work.

Most of the players still think that they are made of cogs and wheels. Thing is, they are totally “digital” since the 90’s. The spinning reels you are seeing are actually a piece of a computer code. If you open a slot machine cabinet and look inside, you won’t be seeing any “cogs”. The inside of a slot cabinet looks like a computer case. Each cabinet is connected to a central server, which actually “spins” the reels. A computer software decides whether you have won or not. You cannot manipulate such a system with a screwdriver – you cannot manipulate it at all.

CHEATING THE COGS AND REELS

Up until the 60’s, slot machines at casinos were mechanical devices. Believe it or not but they did not actually require “electricity” to run. They were like mechanical watches and some casino worker manually winded them every couple of days. These were the games that could be cheated: In fact, most of the slot cheats are made to work with that type of machines. It was even possible to understand when a winning spin would happen – the cogs were making a weird sound when that was about to happen, especially if the machine was old. Thing is, there are no mechanical slot machines anymore. In 1960, all casinos switched to electro-mechanical games, which worked with electricity. These were still using cogs and wheels, but they were much harder to cheat. In the 90’s, IGT presented video slots: Games that ran on a computer software. All the wheels and cogs were gone, it has been only computer code from now on. And this is the case since the last 30 years: All slot games have been running on a central server (even the ones in brick-and-mortar casinos) and they are using advanced software, which cannot be “hacked”.

WHY IS IT IMPOSSIBLE TO CHEAT MODERN SLOT MACHINES?

That’s because the results are determined by an RNG (random number generator) and it is impossible to predict the outcome. Let’s explain this so it will be easier to understand. The symbols you see on the slot machine screen are not actually symbols. They are computer codes that have a numerical counterpart. Here is an example:

• Watermelon symbol: 22343
• Grapefruit symbol: 34342
• Jackpot symbol: 33525

Each time you spin the reel, the RNG software randomly generates a series of numbers. If this number is in the range of the symbol’s number, that symbol is displayed on the screen. For example, if the RNG software generates a number between 22.340 and 22.350, you see the watermelon symbol on the screen, because its numerical counterpart is 22.343. Basically, it works like this:

• The RNG software tells the central server which numbers it generated.
• The central server checks the numbers and decides which symbols to place on screen.

All this happens in mere seconds. The results are really random, even the programmer of the RNG software cannot predict them. In other words, even if you have full access to the central server, you still cannot change the result of the RNG. That’s why “hacking” won’t work: The results of a spin are checked by multiple sources and all this happens in a very short period of time. To “cheat” such a system, you must hack several servers, listen to every digital communication, and get full access to the entire network. To tell the truth, if you are capable of such things, do not waste time on cheating slots. We are sure some intelligence agency will find a job for you. It will be a futile effort anyway: The RTP values of these games are known by the casinos, and if those values change, someone will notice you. In short, there are no slot cheats for modern slot games, whether they are in a brick-and-mortar or an online casino.

THE MOST FAMOUS SLOT MACHINE CHEATS: TOP 10

We mentioned that there was a time when slot cheats were possible, due to mechanical defects of the cabinets. Well, here are some examples. These are known as the most famous slot cheats of all times. We must warn you though: None of them work anymore. So if you are planning to visit a casino with this “knowledge”, know that it will be a punishable crime and a very shameful situation.

1. Cheat Code: This was a cheat method that was not open to “public”. When the video slots first appeared, they were using simple computer code and even simpler chips. There is a thing called “backdoor” in coding, which means the programmer leaves an open door for himself to access the software anytime he wants. Ronald Dale Harris was one of those programmers. He left several backdoors on slot codes he wrote and used some of them to gain full access to the games. Basically, he was able to predict the results before the reels start to spin. He got arrested and the casinos switched to the central server audition we mentioned above. It is impossible to do this anymore.
2. Shaved Coins: Slot machines use simple light sensors to identify the value of coins inserted. The name of this slot cheat is literal: People were shaving the outer rims of the coin. The light sensor accepts it as a normal coin since it is unable to check the outer rim. However, the payout mechanism is able to do that, so detects it as a faulty coin and refunds it. Basically, it was possible to insert a coin, spin the reels, and get the coin back. This was a mechanical fault and it is mostly fixed now. Modern light sensors check the whole surface of the coin (sides included).
3. Fake Coins: This is actually counterfeiting. Some gamblers were using hardened metal dies to make their own “coins”. A person is able to tell the difference but a light sensor can be tricked, which was the whole “concept” of this cheat. Once more, modern light sensors do not fall for this scam. A person named Louis Colavecchio was especially successful at this tactic and he is in jail now.
4. Yo-Yo: Get a monofilament fishing line. Tie it around a normal coin. Drop the coin to the machine. Right after the light sensor accepts it as a payment, pull the line and get the coin back. This “tactic” used at phone cabinets too for years. It does not work anymore. But it was possible to trick the old mechanical slots back in the days.
5. Light Wand: Invented by the famous slot cheater Tommy Glenn Carmichael, this was a weird looking device. Remember the light sensors of slot machines we keep telling you about? Yeah, most of the slot cheats were designed to manipulate that system and the light wand is no exception. This device is inserted at the coin slot of the cabinets, where the light sensor is placed. Then, the device starts to flash a series of lights to confuse the sensor. With this “technique”, you can place a penny and the sensor will think you just placed hundreds of coins. The device was very small and portable, and once it goes into the slot, it is impossible to see it. The fun part is, it is actually still possible to use this technique because light sensors are unguarded against it. However, you need to know which “light codes” the sensor accepts. This was the trick of Carmichael. He bought a couple of scrap slot cabinets, analyzed the sensors, and programmed his device accordingly.
6. Piano Wire: Take a mini-drill. Find a mechanical slot cabinet. Open a small hole next to the cogs. Insert a 20-inch long piano wire to the hole and manipulate the wheels & cogs. If you know what you are doing, you can jam the cogs and stop them at the winning spin. All of these happened back in the 80’s. Well, not anymore. There is a reason why casinos stopped using mechanical slot games.
7. Top-Bottom Joint: Another device designed by Tommy Glenn Carmichael. Yes, he was the most famous slot cheater of all times. He loved to manipulate gaming cabinets – the guy had a talent for it. A top-bottom joint is a long wire. The top looks like the letter “Q”. The bottom is connected to a mini-battery. You insert the Q part into the coin chute and give a little electricity to the wire. If you know where to “touch” inside the cabinet, you can hot-wire the payout mechanism and force the cabinet to release all of the stored coins. Again, this technique required a very detailed knowledge of how slot cabinets work. Tommy Glenn Carmichael was buying those used slot cabinets for a reason. In theory, it is still possible to do this.
8. Monkey Paw: This was the primitive version of a top-bottom joint. Basically, a monkey paw is guitar string attached to a metal rod. If you know where it is located, you can put a monkey paw to a coin chute and trigger the release switch of the payout mechanism. Once more, it is invented by… you guessed it right, Tommy Glenn Carmichael. He used this device on mechanical slots and switched to the top-bottom joint when video slots appeared.
9. Bill Validator Device: You can insert bills into a slot machine too, coins are not the only way to pay them. This is a simple device: The top part is covered by a 100 USD bill. You put a 1 USD bill inside. Insert the device into the chute. The light sensor will accept it as a 100 USD bet. Pull the device out (and the 100 USD bill that is tied to it) and the 1 USD bill will drop into the machine. Congrats, you just made a 100 USD bet with paying only 1 USD. This technique still works on some old slot games.
10. Computer Chip Replacement: Buy a second-hand slot cabinet. Reverse engineer its chips. Write the entire code and get a chip of your own, which will favor the odds in your favor. Go to a casino. Open a cabinet, insert your own chip. Start spinning. A skillful cheater can open the cabinet & insert his own chip in less than 15 seconds. This technique does not work anymore due to the multiple control mechanisms we described above.

HOW CASINOS PROTECT FROM SLOT CHEATS?

They are investing in better light sensors, for starters. In addition, the whole casino floor is watched & recorded 7/24. Note that almost all of these cheats require physical manipulation of cabinets. So they watch the recorded streams right after anybody wins a prize. If they see the manipulation, you get arrested – simple as that. There will always be cheating players, but they will always get caught.

IT IS LUCK AND NOTHING ELSE

Do you wonder how to win at slots? It is luck and nothing else. You cannot cheat slots or use a “system”: All games are random and you cannot predict the results. Sure, there are some tips and tricks you can use to increase your chances of winning, such as choosing games with high RTP rates but that’s it: You cannot cheat the system. Read our other guides that focus on slot games tips & tricks to see the “legal” ways of increasing your luck. Using a cheat is… well, it won’t end well, we can guarantee that.

The secretive world of casino cheaters, the seedy underbelly of the gambling industry, is typically associated with poker and table games.

Cheats physically manipulate cards, dice, wheels, and chips to gain an unfair advantage over the house. But cheaters have long targeted machine games like the slots, too. Ever since the first “one-armed bandits” of old hit saloon floors in San Francisco at the turn of the 20th century, cheats have endeavored to trigger jackpots and payouts unfairly.

The earliest mechanical slot machines on the market accepted nickels, prompting cheaters to melt down cheap metal and fashion counterfeit coins known as “slot slugs.” These tricked the game into offering a free spin. When dimes became the coin of choice, they filed down pennies to the circumference of a 10-cent piece, thus “earning” a nine-cent rebate on every spin.

Slot cheats also liked to drill a hole through genuine coins. They would tie it to some fishing line, play the coin, and let it fall just far enough to trigger a spin. Then, they would pull it back out and repeat the process to play for free.

Eventually, slot machine manufacturers countered those efforts with a device called the “coin escalator,” which displayed previously played coins in a window for all to see. When the operator spotted slugs, filed down pennies, or an insufficient number of wagers in the coin escalator, they knew a cheater was in their midst.

As the mechanical three-reel slots of old gave way to electronic video slots, coin-based machines were replaced by those which accept cash bills or barcoded casino vouchers. Manufacturers also replaced the drum reel setup with complex random number generators (RNGs) that “shuffled” the reels into seemingly infinite combinations.

These technological advancements stemmed the tide of slot cheating for a while, but gamblers who try to get over on the house are relentless if nothing else. Cheaters found more creative ways, engaging in a back and forth crusade with the casinos that continues to this day.

In the past, I’ve taken the time to write up guides on the various ways to cheat casino games, including poker, blackjack, roulette, and craps. But I’ve also included very serious reasons why you should never try them. In this guide, you’ll find five ways you can cheat when playing slot machines circa 2019 and beyond, along with why readers should never attempt it.

1 – Flashing a “Light Wand” to Fool the Machine’s Payout Sensor and Triggering a Jackpot

If you’ve ever heard of the “top-bottom joint,” the “kickstand,” or the “monkey paw,” congratulations! You know more about slot machine cheating than you probably should. But you probably also know about Tommy Glenn Carmichael, the so-called “Godfather of Slot Machine Cheats.”

Carmichael, a former television repairman who parlayed his technical skills into a career as a professional cheat, invented all three of those devices used to fool a mechanical slot’s sensors into unloading its coin hopper on command.

In an interview with the Los Angeles Times conducted back in 2003, convicted slot thief Jerry Criner spoke of Carmichael in reverent tones:

“A legend. He’s the greatest mind as far as developing cheating tools.”

As for the man himself, Carmichael told the newspaper he was but a humble tinkerer who never said no to a challenge:

“Figure out how a machine counts money and then work your way into the machine. We got to playing around, and I could see where it was pretty easy to do. Give me a slot machine and I’ll beat it.”

When the electronic slots and their sensitive sensors used to detect lights and lasers became the norm, Carmichael wasted no time in purchasing an IGT brand machine for himself. Almost immediately, his ingenious mind went to work deconstructing the sensor array. Before long, Carmichael had developed his latest cheating tool, the “light wand.”

Here’s how Carmichael described his light wand epiphany, which occurred as he tricked a casino employee into providing access to an IGT machine’s inner workings:

“The second I opened it up, I knew how to beat it. He told me so much I thought he had called the law. I thought he was trying to stall us.”

Mark Robinson, the former manager of the Nevada Gambling Control Board’s Electronic Services Division, told the LA Times:

“The light would shine in there and be so bright that the sensor would be blinded, causing the hopper to not realize it was paying out the coins.”

Wielding nothing more than a camera battery and a miniaturized lightbulb, Carmichael went to work, bilking casinos from coast to coast out of $10,000 or more per day.

Why You Shouldn’t Fool the Payout Sensors

Like all swindlers, however, Carmichael’s refusal to walk away a “winner” led to his downfall. He was caught deploying a light wand to win jackpots in 1996 and again in 1998, before fleeing Las Vegas for Atlantic City. But his reputation preceded him, and private detectives employed by casinos there quickly spotted Carmichael and took him down.

The feds stripped Carmichael of every last penny from his ill-gotten gains, sentenced him to one year in prison, and placed him on extended probation. That’s reason enough to avoid the light wand “hack,” as is the method’s relatively outdated practicality in the modern age.

2 – Recording Spins on a Smartphone to Crack a Slot’s Randomization Pattern

This scam is so elegant and effective that casinos and slot machine manufacturers alike still haven’t been able to stop it.

During the 2000s, international slot makers Novomatic and Aristocrat Leisure began receiving disturbing reports from their respective casino clientele. Apparently, machines from both manufacturers had been observed paying out small to medium-sized payouts far more often than their preprogrammed odds should’ve allowed.

Comprehensive reviews and investigations were conducted to audit the machines in question, but engineers and analysts could find no trace of physical manipulation.

In 2011, Novomatic issued the following statement to client casinos to warn them about potential weaknesses in its slots “pseudo random number generators” (PRNGs):

“Through targeted and prolonged observation of the individual game sequences as well as possibly recording individual games, it might be possible to allegedly identify a kind of ‘pattern’ in the game results.”

As it turns out, a slot’s RNG isn’t technically randomized because it relies on manmade inputs, such as the second hand of the machine’s internal clock, to generate its seemingly random results. From the average player’s perspective, the results will definitely appear random over both short- and long-term sessions.

But as Novomatic admitted in its internal memo, the “pseudo” nature of a PRNG ensures that detectable patterns can be discerned from the reels’ final alignment, provided a player knew what to watch for.

A professional computer hacker known only as “Alex” was one such player, a gifted mathematical mind capable of cracking convoluted coded algorithms in his head. After deciphering the codes behind a particular model of Novomatic slot machine, then the Aristocrat Mark IV model, Alex designed a computer program to predict exactly when players should press the “SPIN” button.

Alex formed a team of players and taught them to use iPhone cameras to secretly record a few dozen low-stakes spins. This footage was then uploaded to Alex’s computer, which crunched the patterns onscreen to determine, down to the millisecond, when the “SPIN” button should be pressed to trigger a winner.

From there, all Alex had to do was send an automated text message timed with a 0.25-second delay to his cheater’s phone, thus providing the average human’s reaction time as a window. A quarter of a second later, with the stakes now increased significantly, the player would press “SPIN” and watch the screen light up for a sizable score.

Why You Shouldn’t Crack a Slot’s Randomization Pattern

Both companies acknowledge that their machines are vulnerable to Alex’s version of slot hacking. But as he pointed out in an interview with Wired magazine in 2017, his scheme isn’t technically considered cheating because nobody physically manipulates the machine:

“We, in fact, do not meddle with the machines – there is no actual hacking taking place. My agents are just gamers, like the rest of them. Only they are capable of making better predictions in their betting… Yes, that capability is gained through my technology, it’s true. But why should it be against the law? On the basic level, it’s like using a calculator for counting faster and more accurately, rather than relying on one’s natural capacity.”

Alex himself was never caught, thanks to his identity concealing skills and Russian residency, but several of his “agents” have been apprehended all over the world. As for the mastermind himself, Alex failed in convincing Aristocrat to hire him on as a security consultant.

Today, he makes a living selling his tech for five-figures a pop on the dark web rather than resort to cheating himself.

So, unless you’re a savant like him with otherworldly math skills and the “Rain Man” ability to read PRNGs in your sleep, or have $20,000 to spend on a slot-cheating system, hacking the game isn’t a great idea.

3 – Using Computers and Advanced Tech Skills to Rig the Machine for Instant Jackpots

Another case of computer engineering knowledge becoming the cheat’s tool of choice involves a fair share of mystery more than 20 years later.

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Beginning in 1996, former locksmith Dennis Nikrasch used the “brute force” style of computer hacking to essentially break the machine’s payout sensors. Using a blocker to screen the surveillance cameras, Nikrasch took less than a minute to pick the lock, open the machine’s interface, and attach a device that manipulated the reels’ RNG. Just like that, Nikrasch was gone like a ghost, leaving his blocker behind to play the game until an inevitable jackpot was triggered shortly thereafter.

Video Slot Machine Cheats

Speaking with the Las Vegas Sun, former chief of the Enforcement Division of the Nevada Gaming Control Board (NGCB) Keith Copher offered begrudging respect when referencing Nikrasch’s scam:

“He had the most sophisticated system we’ve ever seen. We don’t know that he’s passed it along, and if he has, he’d better tell us.”

J. Gregory Damm, the assistant US Attorney who ultimately prosecuted Nikrasch for his litany of crimes, told the newspaper the use of a proxy helped hinder casino security systems:

“He would be in the casino a very short period of time. He would fix the machine, then leave. He wasn’t present when the jackpot was hit.”

Why You Shouldn’t Rig Slot Machines

Nikrasch absconded with more than $6 million in stolen slot funds before his run was cut short, sending him to prison for seven years.

Once again, the biggest reason to avoid this slot cheating method is impracticability, because Nikrasch took his tech secrets to the grave.

4 – Watching for Players Who Leave Money on the Machine So You Can Spin for Free

Whether you count this one as cheating is up to your own moral code, but what do you do when a neighboring player leaves a few bucks in the next machine over?

You see them take their Player’s Card, and even leave the casino, so you’re sure they’re not coming back for that last dollar or two. Do you slide over and play the free spins?

If you’re like Colorado resident and gambling man “Dan” (his last name hasn’t been made public), you take your shot at winning a jackpot on the forgetful player’s dime.

Why You Shouldn’t Use Other Players’ Money

While gambling in a Central City casino two years ago, Dan saw a fellow slot player leave $2 on a nearby machine. After playing two spins and winning nothing, Dan continued his own game for awhile before security arrived and escorted him to the dreaded back room.

Here’s how Dan described the scene to his local KDVR News station after the ordeal was over:

“There was no intent to steal from anybody. I had no idea. I go upstairs to the third floor into a dirty little room and someone tells me I stole $2 from the casino. They said they had it all on camera. I was guilty, I guess. You’re certainly not stealing it from the casino because it wasn’t theirs to begin with. There are certainly times where there are ‘laws,’ but they are not morally or ethically correct.”

Dan was charged under Colorado Statute 12-47.1-823(1)(c), which covers various forms of casino cheating. In this case, the casino claims ownership over any lost, forgotten, or unused funds in its facility, so Dan technically stole $2 from the house and not the other player.

He was arrested, charged with criminal conduct, levied with $250 in fines, forced to pay for FBI criminal background checks, placed on probation, and banned from all Colorado casinos for a full year.

And while Dan’s case might seem like an outlier, consider that Colorado charged nearly 1,000 players for stealing slot funds in 2017 alone. Similar laws are on the books in Las Vegas and elsewhere, so when you see a few dollars flashing on an unclaimed machine, think twice before trying to turn somebody else’s money into your life-changing jackpot moment.

5 – Counterfeiting Bills or “Shaving” Coins to Trick the Machine Into a Free Spin

I covered the concept of counterfeit coin slugs in the introduction, and nowadays, you’ll only find a handful of old-school coin-operated slots in Downtown Las Vegas. You can blame infamous counterfeiter Louis “The Coin” Colavecchio for that development.

Why You Shouldn’t Counterfeit Bills or Coins

During his reign as the East Coast’s preeminent slot cheat, Colavecchio used genuine steel dies from U.S. Mint printing presses to trick the machines. That ploy wound up resulting in a seven-year prison bid, leaving the formerly flush “Coin” Colavecchio penniless and out of options.

After his release, Colavecchio was forced to adapt to a brave new world of cash and voucher-operated slots. Predictably, he tried to expand his operation into counterfeit $100 bills, hoping to hit high-stakes machines for six-figure scores.

And just as predictably, the U.S. Secret Service swooped in to arrest the now 77-year old Colavecchio in 2018.

Counterfeiting is one of the most serious federal crimes imaginable, and when you add in casino surveillance, this cheating recipe just doesn’t add up.

Conclusion

Slot machines probably inspire so many cheating attempts simply because of the volatile gameplay they offer. When winners can come few and far between, and losing by session’s end is a statistical certainty barring a big jackpot, grinding the slots can get downright depressing in the worst of times.

Cheaters who refuse to accept the “boom and bust” dynamic of the slots will always try to gain the upper hand, but as these five entries make clear, casinos are always one step ahead of the culprits.

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